Gearing.



J. H. GILMAN.

GEARING.

APPLICATION FILED JAN. 25, 1912. 1,125,838. Patented Jan. 19, 1915.

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J. H. GILMAN.

GEARING.

APPLICATION FILED JAN. 25, 1912.-

Patented Jan. 19, 1915.

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J. H. GILMAN.

GBARING.

APPLICATION FILED JAN. 25, 1912.

Patented J an. 19, 1915.

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UNITED sTArns PATENT OFFICE.

JOHN GILMAN, OF OTTAWA, ILLINOIS, ASSIGNOR TO KING- & HAMILTON COMPANY, OF OTTAWA, ILLINOIS, A CORPORATION OF ILLINOIS.

GEAR-ING.

Specification of Letters Patent.

Patented Jan. 19, 1915.

Application filed January 25, 1912. Serial No. 673,467.

1 '0 all whom, it may concern Be it known that I, JOHN H. GILMAN, a citizen of the United States, and a resident of Ottawa, in the county of La Salle and State of Illinois, have invented certain new and useful Improvements in Gearing, of which the following is a full, clear, and exact specification.

My invention is concerned with a gearing or driving mechanism designed especially for wagon dumps especially adapted to be located in the driveway of a crib, barn or elevator, and is designed to produce a device of the class described that shallbe extremely simple in its construction, which shall occupy a minimum space, and require a very small number of elements entering into its make up.

To this end it consists in certain novel combinations of elements, which will be described at length in the specification and particularly pointed out in the claims.

To illustrate my invention, I annex hereto three sheets of drawings, in which the same 26 reference characters are used to designate identical parts in all the figures, of which,

Figure 1 is a side elevation showing the hoisting mechanism as seen extending transversely of the driveway of a crib or barn;

Fig. 2 is a front elevation of the same; F 1g. 3 is a side elevation of the gearing on a larger scale; and Fig. 4: is a top plan view of the same.

My improved hoisting mechanism is designed especially to be suspended from the overhead joists or beams 10 of the drivewav of the crib, barn or elevator in which the dump is located, and 11 indicates the floor of the driveway. The hoisting mechanism proper may consist of the drum shaft 12 which is journaled in suitable bearings 13 supported upon cross pieces 14: secured to the under side of the joists 10, and this drum shaft is preferably provided with two drums 4515 adapted to have the lifting chains 16 wound thereon as the drum is rotated. As a preferred means of lifting the front end of a wagon by the chains 16, I provide the lower ends of said chains with loops conveniently formed by using the 'S-shaped hooks 17, which enables me to form loops of any desired size adapted to be passed between the spokes and fitted over the hubs of the front wheels of the wagon in a well known and customary manner. The gearing is preferably mounted in a frame casting 18 which is secured to the cross piece 19 secured to the under side of the joists 10. The end of the drum shaft 12, or a continuation thereof, is journaled in bearings 20, and between said bearings it has secured thereon the worm wheel 21, which meshes with a worm 22 loosely mounted on the drive shaft 23, and preferably having the spur gear pinion 24 formed integral therewith or rigidly secured thereto. This drive shaft 23 is journaled in the bearing 25 suspended from the cross piece 19, and in the bearings 26 and 27 formed in the frame casting 18. The drive shaft 23 is provided at one end with the sprocket wheel 28, which is adapted to be connected by a sprocket chain 29 with the sprocket wheel 30 secured on a power shaft 31, one end of which is journaled in the bearing 32, secured upon the support 33, and it will be understood that this method of driving the shaft 23 is employed when the power shaft 31 extends longitudinally of and at one side of the driveway. Where a power shaft 34; must be employed which extends transversely of the driveway, it is preferably mounted in suitable bearings, one of which is shown at 35 as mounted on the cross piece 36 connecting joists 37 supporting the flooring of the driveway so that the shaft 34: will be below the level of said floor. In this case a sprocket wheel 38 is secured on the power shaft 34 and connected by a sprocket chain 39 with a sprocket wheel 40 secured on the transverse drive shaft 4cl, which is supported at one end in a suitable bearing 42 secured to the under side of the cross piece 43, and at the other end is mounted in bearings 44 and 45 formed in the yoke 4C6 supported from the frame casting 18. A miter gear s17 on the transverse shaft 41 meshes with a miter gear 48 on the end of the drive shaft 23. The sprocket wheel 19 mounted on the shaft +11 drives the grain elevator (not shown) by means of the sprocket chain 50.

The drive shaft 23 has splined or otherwise mounted thereon, so as to be free to slide on but compelled to rotate with it, a clutch sleeve 51 having the customary annular groove therein to receive the customary pin carried by the arm 52 of the bell crank shifting lever pivoted at 53 to the frame casting 18. On one side of the clutch sleeve 51 is the worm 22 provided with clutch teeth with one side or the other of the arm 66 5i adapted to coiiperate with the clutch teeth 'on the sleeve 51, while on the other side of the sleeve is the spur gear wheel loosely journaled on the shaft and having the clutch teeth 56 by which. it may be engaged with the clutch sleeve 51. A. countershaft 57 is j ournaled in bearings in the frame casting 18, and has secured thereon at one end the spur gear wheel 58 meshing with the pinion 2st, while it has at the other end the spur gear pinion 59 meshing with the idle pinion 60 journaled on the stud 61 extending from the frame casting and also meshing with the spur gear wheel 55. The drum shaft 12 has secured on its outer end the spur gear pin ion 62, which meshes with the spur gear wheel 63 journaled on the stud 6 1 project ing from the frame casting 18. This spur gear wheel 63 is provided on its inner face with a lug 65, which is adapted to contact of the bell-crank shifting lever, the vertical arm of which is connected with the bar 67 extending to a point adjacent the rear of the wagon to be dumped.

With the mechanism heretofore described,

the operation of the apparatus is as follows:

Assuming that the drive shaft 23 is driven by the connections described either from the power shaft 31 or the power shaft 34:, it will be rotated continuously in one direction while the power is in operation. When the loops on the chain 16 have been adjusted over the hubs in the manner described, the

bar 67 is shifted so as to bring the clutch sleeve 51 into engagement with the teeth 54:

of the worm 22, when the worm will be compelled to rotate with the shaft 23 and drive the worm shaft 12 through the worm wheel 21 at the slow rate of speed desired to wind contents of the wagon to be dumped slowly enough to be takencare of by the customary power-driven elevator. When the drum shaft 12 has been rotated a sufficient number of times to lift the wagon to the desired extent to discharge all the grain, the wheel 63 will have been given a complete rotation and the pin 65 will strike the upper side of the arm 66 of the shifting lever and rock it so as to carry the clutch sleeve 51 out of engagement with the teeth 54;, thereby unclutching the shaft 23 from the gearing and stopping the further rotation of the drum shaft 12, which, however, is held with the wagon in its elevated position on account of the braking action of the worm with the worm wheel. When the operator is ready to have the front end of the wagon lowered, the bar 67 is pulled in the proper direction to bring the teeth of the adjacent end of the clutch sleeve 51 into engagement with the teeth 56 of the gear wheel 55, which will then be coupled to the shaft 23, and it will, through the train of gearing including the idle pinion 60,

the pinion 59, shaft 57, spur gear wheel 58 and pinion 24:, drive the worm 22 at a much higher rate of speed than it was driven when coupled directly to the shaft 23. This enables the drive shaft, driven at a uniform rate of speed, to lower the wagon much more rapidly than it is raised. When the wagon is completely lowered, the wheel 63 has been given substantially a full rotation in the opposite direction when the pin 65 strikes the under side of the. arm 66 of the shifting lever and moves the clutch sleeve out of en gagement with the teeth 56 of the gear wheel 55, thus causing the, drum shaft 12 to be again stopped until another wagon is driven into place to have its contents dumped.

While I have herein shown and described my novel gearing for raising and lowering the lifting chains at different rates of speed, I do not herein claim the same, but the same is claimed in my patent No. 1,078,672, dated November 13, 1913.

.lVhile I have shown and described my invention as embodied in the form which I at present consider best adapted to carry out its purposes, it will be understood that it is capable of modifications, and that I do not desire to be limited in the interpretation of the following claims except as may be necessitated by the state of the prior art.

What I claim as new, and desire to secure by Letters Patent of the United States, is:

1. In gearing, the combination with a hoisting shaft, of a worm wheel secured thereon, a transverse drive shaft, a worm on the drive shaft meshing with the Worm wheel, reversing gearing and automatic stop mechanism interposed between the drive shaft and the worm wheel, said automatic stop mechanism being actuated by the hoisting shaft.-

2. In gearing, the combination with a hoisting shaft, of a worm wheel secured thereon, a transverse drive shaft, a Worm on the drive shaft meshing with the worm wheel, reversing gearing interposed between the drive shaft and the worm, and automatic stop mechanism including a shifting lever, a pinion on the hoisting shaft, a gear Wheel driven by the pinion, and 2. lug carried by the gear wheel engaging an arm of the shifting lever.

3. In gearing, the combination with a hoisting shaft, of a worm wheel connected with the shaft, a drive shaft, a worm connected with the drive shaft and meshing with the worm wheel, and reversing gearing and automatic stop mechanism, said stop mechanism including a shifting lever movable by hand to start the hoisting shaft to rotate in either direction and automatically to stop it at its limit of rotation in either clirection, and gearing driven by the hoisting lever.

4. In gearing, the combination with a hoisting shaft, of a worm wheel connected with the shaft, a drive shaft, a Worm connected with the drive shaft and meshing with the worm wheel, reversing gearing interposed between the drive shaft and the worm, and automatic stop mechanism, including a shifting lever movable by hand to start the hoisting shaft to rotate in either direction and automatically to stop it at its limit of rotation in either direction, a pinion on the end of the hoisting shaft, a gear Wheel meshing therewith, and a lug carried by the gear Wheel to engage an arm on the shifting lever, substantially as described.

5. In gearing, the combination with a hoisting shaft, of a worm wheel connected with the shaft, a drive shaft, a worm connected with the drive shaft and meshing with the worm wheel, reversing gearing interposed between the drive shaft and the worm, and automatic stop mechanism including a shifting lever movable by hand to start the hoisting shaft to rotate in either direction and automatically to stop it at its limit of rotation in either direction, gearing driven by the hoisting shaft to operate automatically the shifting lever, a transverse drive shaft, and miter gears on the drive shaft and the transverse drive shaft.

In witness whereof, I have hereunto set my hand and affixed my seal, this 13th day i of J annary A. D. 1912.

JOHN H. GILMAN.

Witnesses:

Aneos'r Lnnmorr, En. R. CLAUS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

